package com.day14;

/**
 * 如何自定义异常类?
 * 1.继承于现有的异常结构，RuntimeException,Exception
 * 2.提供全局常量:serialVersionUID
 * 3.提供重载的构造器
 */
public class MyException extends Exception{

    //对类的标识，唯一的标识本类
    static final long serialVersionUID = -338324993124229948L;

    public MyException(){

    }

    public MyException(String msg){
        super(msg);
    }


}
